Convert the Roman numeral MDXXIX to Arabic numerals.

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Multiple Choice

Convert the Roman numeral MDXXIX to Arabic numerals.

Explanation:
Roman numerals are added from left to right, except when a smaller numeral sits before a larger one, which signals subtraction. Here, M is 1000 and D is 500, and since a larger numeral follows a smaller one, you simply add: 1000 + 500 = 1500. Then XX adds 20, bringing it to 1520. The final part, IX, is a subtractive pair where I before X means 10 − 1 = 9. Add that to get 1529. So the Arabic numeral is 1529.

Roman numerals are added from left to right, except when a smaller numeral sits before a larger one, which signals subtraction. Here, M is 1000 and D is 500, and since a larger numeral follows a smaller one, you simply add: 1000 + 500 = 1500. Then XX adds 20, bringing it to 1520. The final part, IX, is a subtractive pair where I before X means 10 − 1 = 9. Add that to get 1529. So the Arabic numeral is 1529.

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